package org.formal.common.utils;

import javax.servlet.http.HttpServletRequest;

/**
 * web工具类
 * @author jiangyan
 *
 */
public class WebUtil {
	
	/**
	 * 获取真实ip
	 * @param request
	 * @return
	 */
	public static String getRemortIP(HttpServletRequest request) {
	   String ip = request.getHeader("x-forwarded-for");  
	   if(ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {  
		   ip = request.getHeader("Proxy-Client-IP");  
	   }  
	   if(ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {  
		   ip = request.getHeader("WL-Proxy-Client-IP");  
	   }  
	   if(ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {  
	       ip = request.getRemoteAddr();  
	   }  
	   return ip;  
    }
}
